Sash opening and closing mechanism



Sept. 25, 1945.

R T. AXE

SASH OPENING AND CLOSING MECHANSM -Fild June 30, 1943 ATTORNEYS PatentedSept. 25, 1945 y, 2,385,676 SASI OPENING AND CLOS-ING MECHANISM Roy TLAxe, Syracuse, N. Y., assignor` to The O. M.

Edwards Company, Inc.,

poration of New York Application June 30, 1943, s'erial'No 492,899V

3 claims. (ci. 26S-126) AThis invention 'relates to sash opening andclosing or regulating mechanisms, such as the sash used in buses andother vehicles, which mechanism includes a lever arm, which is connectedto one of the rails, as the top rail, of the sash at the median line ofthe sash, and means for actuating the lever including a rotatableelement or Wheel connected to the lever by a connectingY rod, -soarranged that movement of the connecting rod during one half of are'cipr'ocationv opens the sash and during the other half, closes thesash.

This invention has for its object an arrangement by which the lever armmaybe readily and accurately adjusted to vary the starting and stoppingor reversing positions in accordance with the position ofthe sash, whenclosed and fully open.

It further has for its object whereby the point of connection betweenthe lever and the sash moves in an arc close to the chord of the arc ora straight line, which is a vertical line, in case of the sash, whichraises and lowers, passing through the center of the sash vertically.

Other objects appear throughout the'specification.

The invention consists in the novel features and in the combinations andconstructions hereinafter set forth and claimed. In'descrilbing thisinvention, reference is had to the accompanying drawing in which likecharacters designate corresponding parts in all the views.

Figure 1 is an elevation of this mechanism, the contiguous portion ofthe frame of the vehicle or bus being shown.

Figure 2 is a fragmentary elevation, partly in Section, looking to theleft in Figure 1.

Figure 3 is a fragmentary plan view looking downwardly in Figure 1; iFigures 4 and 5 are detail views of one ofthe eccentrics for effectingthe adjustment of the lever arm, which is connected to the sash, Figure5 being on the line of 5 5, Figure 4.

This mechanism comprises, generally, a motion transmitting lever pivotedto suitable framing in the vehicle or bus, above or below,` or at oneside or the other of the sash, dependent upon Whether the sash opensvertically or horizontally, the lever being connected to the sash, arotatable element or wheel mounted on the sash framing, the Wheel havinga crank pin, a connecting rod between the crank pin and the lever andconnected to the lever at a` point eccentric to the pivotal axis of thelever, a suitable handle, as a crank, and reduction gearing between thehandle and the crank wheel, the handle transmitting its motion through aslip clutch, so that when the sash reaches the limit of its movement ineither direction, force continued to be applied to the Syracuse, N. Y.,a corcrank handle causes the crank handle to slip or unclutch.

'Ihe mechanism further includes the adjustment features hereinafterspecifically pointed out.

The mechanism here' shown is adapted for a sash which raises `and lowersvertically by a handle arranged above the top of the sash.

I designates the motion transmitting lever, this Ibeing pivoted at2 tothe car :framing 3, the lever being connected at its lower end to thetop rail 4 of the sash through a carriage, which has a limited movementlengthwise of the top rail during the movement ofthe lever, that is,during the movement of its lower end in an arc.

5 designates the rotatable motion transmitting part or wheel suitablymounted on a spindle or shaft 6 on the framing 3, it having a crankpiny 1. 8 designates a connecting rod having a bearing at one end on thecrank pin, and also a bearing at its other end on a pin 9 located on thelever I eccentric to the pivotal axis 2 of the'lever. The pivot 2, pin 9andthe free end of the, lever are so relatively located that the leveris an angle lever having a long arm and a short arm, the short arm beingpivoted at 2 at its end to the frame 3.

The wheel 5 is a gear and it is actuated from` a suitable handle througha reduction gearing.

I0 designates the handle, this being mounted ,on a spindle I I connectedthereto through a slip clutch I2, the spindle being mounted in asuitable casing I3 xed to the frame and having a pinion I4 thereonmeshing with an intermediate gear I5. A shaft I6 has alpinion I'Ithereon which meshes with the gear 5. The gear I5 laps the gear 5. Thecasing having a projecting portion I8 presses against the side face ofthe gear wheel 5 opposite to that lapped 4by the gear I5 and acts as abrake to prevent movement of the sash under its own weight and momentum.The slip clutch I2 may be `of any suitable construction, and is hereshown as including a head I9 keyed to the spindle or shaft II, anaxially spring-pressed sleeve 2i) and clutch members, as balls 2|between the sleeve and the head, the lballs normally being seated insockets 22 in the head I9. The force ofthe spring 23 on the sleeve issuiicient to hold the balls 2I clutched in the sockets 22 under normaloperation, but should the operator continue to apply a turning force tothe handle, when the sash has been returned to closed position, or hasreached its fully open position, the balls will be cammed out of thesockets 22 and the handle I0 and its hub or sleeve 20 will rotate idlyabout the shaft II. In this sash regulating mechanism, this does notoccur after the connecting rod 8 is once properly adjusted and alsoafter the arm I is properly adjusted relatively to the carriage 31 tocause the 'sash to be in fully closed 'or in fully open and providedwith ofthe free endfof the lever l.

, position, when the connecting rod is at one end Y The bearings betweenthe opposite ends of connecting rod 8 and the crank pin 1 and pinKS' ofthe lever I are eccentric bca'ringlsand? adjds't able, one beingadjustable to vary the lineal dimension of the connecting 'rod'jfadhence'the throw of the lever l, and the other being adjustable to Varythe starting position *ofV the free end kof the lever I to conform-t thefully'- closed' position of the sash, that is, vary the efEect-Vi-veradial angleof the long arm of the lever. This a disk or iti-rig 24 difeccentrically mountedk on the pin 1 o'rg arid) tti-ng yin a circl'alr'bea-ring hole 2'6- or' Z'F one end or" the" other of the connectingr'odj 8L vr'lfl'ie 'has suitahie hatches 2"@ er' 2c therein for eoaetihea retainer er -deg 3c" or-el which is heid iii position bye suitableineens este screw extehiihgf thrcug'h a sist-*t the deg'. obviousiy,the' connecting ich Amay he sdmsted a l'ir'i'e'al` direction to" varythe' throw ofthe' lever' F by adjusting' the eccentric 2aen'i thestarting angine-r pesi'ti-eri' of theiever 'or th-ej ihitiai postetien-er' the fewer ehd of thev lever t maybe) eidejusted'if necessary,hy turning the eccentric `ring 25'. rrewe'ver, these two` adjustments;which are initier sdilistmehts, may be omitted; because ih someiri'sftallatioristheyv are not reachable" vvithveheie, which cftentime'sextends the fuif ieiigth" Q `The stud 55 is suitably mounted inthecarriage and has-a headV` o rndi'sk' d ovrlyng'tl'i frame' offthecarriage. The endA of the lever afn if extends etween this-disk Ml'and anut` `4`I Vi'llfiread'- ingT ori-the stud.v

In the mechanism here illus't'rated f or raising andA lowering thesash-` of vehicles and buses' erribody thel handlefwheel and"redilct'ion gear-ing.be2 tween. the handlerandethe wheeland alsoI a cralthe handle turnsralways in one mechanism, but

direction through repeated complete circles, and turning of the handleuntil the crank travels in asemi-circle will completely open the windowsash end eeiitihced mvement in thesseme direction.

By the adjustments of the connecting rod 8 and the arm l, the connectingrod can be adfiistec' so that its bearings will come into posii Y tionto reverse when the sash is fully open and lO relatively tothe carriagelly closdQ-afdbyfthe adjustment of the arm I 31, the sash can be that itwill be accurately when the connecting rod is adjusted in such positionflfly closed Vcir' dijen in reversing positions.

d et the" fewer end' or thel Y jwayvfa lever havingan" elongatedcarriage-afl', one

' @Term is;

lso, in View of the arrangement of the arm l aridi tle carriage the railof tl-iel sal-slyth: force arm is piilied't the sash at all" `l`o`s`e tot e frie'diarrlineE of the g the'f raising andloweringf, the deesriettifiter heeo'riie jammed, tee'etset of the ft' of the sash.

i I eseshepehirig" arid- 'resi-fig hretheisiii lever-pirotecst one'eri-ii eric hevihgitsj other @mijA heeteetethesesh the median iii-fe' fC011 with respect te thev directionof moves-ien ating means for thelever includingv a'wh'e 4h iiigjs veat-ehh' piiji, connecting hierbetween the crank pi eric the reifer' eridecrihettec to the rever' et epoint eeee'ntrie te the pivetsi or the lever,y hiee'hs for t'iirhih: thewheer about arid meeii's for varyingv the eheetivest'er'tihg i of thelever arm relatively to the" radial angle sash, the' sash having c slidetherein; aha' seid meets including rheeh'inisii for attaching" 'the shdetcth'e' ehd of said eitpcih'ts iii clistere-ht recarsi eagles for sei-dwith respect te the' pivctai exis or the lever. i 2. fn'l'S'lIg-Iili's'ni, leveren/eten at che* efid aha having its thefiehdconnected to thesash at the median line tleef with respect te thedirectif-ih er rhvefeht, actu-Y afifg f` Y lffl"k ilg- Wlel' ing a crankpin, a 'e'ctig r'd' b'etwfe `tl pf li a-lld' voifil'd. EO the leve-fet e'pihjt eeeeh rie tothe pittei lever; iiie'ans fortffig the' wheel ericht'its and means for varying the eiective starting' fldiallagl' v'fflfi lvarm 'relatively {ffii/'ITISv sash, the sash having a slidethereihan-d;slidI means includingmechanism for attaching.'k the' slide to the endof;4 saidarm at points in diferent radial Qangl'es of said arm vwith`respect to the ivotal axis of thelever indiierent radial angles of saidarmsaidpoints being. arangedin a series in aline Yextending'. thegeneral' direction of thefline of travel of the sash. Y

' Ih asash opening and closingmechanismf the combinatiowith agsash railformedl with* a enci movable in the way, the leverbing 'pivoted to thecarriage at apoint intermediate the ends thereof, -a rotatable motiontransmitting riart having a kcrank 3in,fa connectingA rodhaving abearingatrone end'onV the cranlr'n'in and` at its' othenend on the levereccentric to the pivotaf :thisthereof,` and? means foi adinstingt'heangle gf` Athe ievei ieietiieiif te the :taeter edriiiee'tidribetWeIrT/aldi'fhig; n f

esisf' the g

